html5 - how to provide notification with PHP -

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please explanation of how provide notification when enter data form stored in database?

the picture below example enter image description here

the picture above example notivikasi when form empty, ask how make successful notivikasi when form filled in data?

    if (isset($_post['btnsimpan'])) {        $nama_kat     = $_post['nama_kat'];        $pesanerror   = array();          if (trim($nama_kat)=="") {          $pesanerror[] = "<b>kategori</b> masih kosong cuy,...!!";        }          $ceksql="select * kategori nama_kat='$nama_kat'";        $cekqry=mysql_query($ceksql) or die ("eror query".mysql_error());         if(mysql_num_rows($cekqry)>=1){          $pesanerror[] = "sorry bos kategori <b> $nama_kat </b> sudah ada, ganti dengan yang lain ya,..!!";    }          if ($pesanerror){          echo "<div class='msgerror'>";          foreach ($pesanerror $indeks=>$pesan_tampil) {           echo "$pesan_tampil<br>";        }         echo "</div> <br>";      }      else {        $mysql = "insert kategori (nama_kat) values ('$nama_kat')";        $myqry = mysql_query($mysql) or die ("gagal".mysql_error());      }    }       $dtnama_kat = isset($post['nama_kat']) ? $_post['nama_kat'] : '';    ?>      <div class="judul"><h2>tambah data kategori</h2></div>      <div class="area_main">        <form method="post" action="<?php #echo "$aksi?mod=kat&aksi=tb_dt"; ?>" >          <table class="form">  		      <tr>              <td>nama kategori</td>              <td>:</td>              <td><input type="text" name="nama_kat" id="nama_kat" value="<?php echo $dtnama_kat; ?>" size="41px" /></td>            </tr>            <tr>              <td></td>              <td></td>              <td><input type="submit" name="btnsimpan" class="button" value="simpan"> </td>            </tr>          </table>  	  </form>      </div>

the section of provided code adds error message is:

  if ($pesanerror){     echo "<div class='msgerror'>";     foreach ($pesanerror $indeks=>$pesan_tampil) {      echo "$pesan_tampil<br>";   }    echo "</div> <br>";

to add success message, echo message in else section updates database:

else {   $mysql = "insert kategori (nama_kat) values ('$nama_kat')";   $myqry = mysql_query($mysql) or die ("gagal".mysql_error());    echo '<div class="msgsuccess">your message here</div>';  }

this output <div> css class msgsuccess before <div class="judul"><h2>tambah data kategori</h2></div> content of html document. if want message in location, store in variable , echo variable in proper location in html document.


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